Syntax for AT command CPSMS - always gives error when trying to set PSM values

RE: Syntax for AT command CPSMS - always gives error when trying to set PSM values

Achim Kraus — Tue, 28 Nov 2023 05:57:09 GMT

> shell

Maybe worth to mention that additional to the term "AT command" :-).

RE: Syntax for AT command CPSMS - always gives error when trying to set PSM values

RileyH — Mon, 27 Nov 2023 19:32:00 GMT

Yes, I am using the shell. Sorry I should have pointed that out in my question so thanks for noticing the double AT.
Thanks you for your answer and the fast response. I assume this will solve my issue and I will need to reread the shell documentation to understand which special chars need to be escaped.

RE: Syntax for AT command CPSMS - always gives error when trying to set PSM values

RileyH — Mon, 27 Nov 2023 19:28:12 GMT

Thanks but I am using the shell so the double AT is required. SInce I have we have our own application running on the module and also need the shell to debug the system (and get logs), I need the shell. the double AT is a bit strange but it works (as long as you escape special characters :) see below.

RE: Syntax for AT command CPSMS - always gives error when trying to set PSM values

Didrik Rokhaug — Mon, 27 Nov 2023 09:05:35 GMT

Hi,

I assume you are using the modem shell sample?

In that case, you must escape the quotation marks with "\".

So the command will be at at+cpsms=1,\"\",\"\",\"10011110\",\"00000101\"

Best regards,

Didrik

RE: Syntax for AT command CPSMS - always gives error when trying to set PSM values

Achim Kraus — Mon, 27 Nov 2023 08:36:04 GMT

I'm wondering:

Do you use:

at at+cpsms=1,"","","10001110","00000101"

at+cpsms=1,"","","10001110","00000101"

The first one is wrong, only one "at" must be used, and the second one "works on my machine".

Maybe, if you don't use the double "at", you provide more lines from your logs.